Originally Posted by 03SuperSLADE

I will try to give a cliff notes version. Whipple recomended the 2.9 for my 408 build as opposed to the 2.3 based on what i was doing. It started off a little rocky when i realized i was putting a square peg in a round hole but they were there to answer any question(s) i had as i uncovered new challenges. Unfortunately they don't make a kit for it so i had to do all the designing myself. Many hours of staring and thinking. I have a new found understanding why already made kits cost so much...R&D!

I don't know if the newer 6.2 Escalades come with the L92 heads, rectangle ports but in 2003 they came with Cathedral ports head and to my knowleage the 2.9 Whipple can only be used with L92 style heads.

The first challange i saw since i decided to go with the Camaro 90mm throttlebody was needing to move the alternator, plus to upgrade the TB on a truck you need a special adaptor to allow it to open past 80%, tripped over that one before i installed otherwise i would have never known. I could not find anyone that make a relocation bracket for trucks so I wound up designing my own alternator/power steering pump bracket to move the alt to the side to clear the throttle body accuator. I wound up taking a few parts from the new Camaro to make it work easier, plus having the Whipple Camaro installation manual in hand kinda leaned me that way.

I wound up using a Camaro water pump due to the postioning of the truck pump neck, only draw back i have to remove the radiator hose to change the serpentine belt, hopefully wont have to do that too often. I went with the Camaro EVAP purge solenoid and lines. Since the trucks fuel regulator was basically built into the intake plenum i went with a Aeromotive bypass regulator. Initially tried factory lines with a boost a pump and ran out of fuel pressure so i dropped the tank installed a sump to feed an A1000 pump feeding the rails with -8 an lines, plenty of fuel now when hitting 18lbs of boost.

I know there were a few more things but i just cant think of the right now, possibly blocking them out, this thing was like peeling an onion.

Once i finally got it running i had a hard time finding someone to try and tune it. No one around here has a AWD Dyno that can fit the ESV with a 120 inch wheelbase. Blew a full race built 4l60e in 4K miles and installed a 4L80e and tried 2wd, finally got it on a dyno 840 ftlbs of torque. No traction so i am in the process of converting it back to AWD.

Heres a couple of pics.

Originally Posted by 03SuperSLADE

I will try to give a cliff notes version. Whipple recomended the 2.9 for my 408 build as opposed to the 2.3 based on what i was doing. It started off a little rocky when i realized i was putting a square peg in a round hole but they were there to answer any question(s) i had as i uncovered new challenges. Unfortunately they don't make a kit for it so i had to do all the designing myself. Many hours of staring and thinking. I have a new found understanding why already made kits cost so much...R&D!

I don't know if the newer 6.2 Escalades come with the L92 heads, rectangle ports but in 2003 they came with Cathedral ports head and to my knowleage the 2.9 Whipple can only be used with L92 style heads.

The first challange i saw since i decided to go with the Camaro 90mm throttlebody was needing to move the alternator, plus to upgrade the TB on a truck you need a special adaptor to allow it to open past 80%, tripped over that one before i installed otherwise i would have never known. I could not find anyone that make a relocation bracket for trucks so I wound up designing my own alternator/power steering pump bracket to move the alt to the side to clear the throttle body accuator. I wound up taking a few parts from the new Camaro to make it work easier, plus having the Whipple Camaro installation manual in hand kinda leaned me that way.

I wound up using a Camaro water pump due to the postioning of the truck pump neck, only draw back i have to remove the radiator hose to change the serpentine belt, hopefully wont have to do that too often. I went with the Camaro EVAP purge solenoid and lines. Since the trucks fuel regulator was basically built into the intake plenum i went with a Aeromotive bypass regulator. Initially tried factory lines with a boost a pump and ran out of fuel pressure so i dropped the tank installed a sump to feed an A1000 pump feeding the rails with -8 an lines, plenty of fuel now when hitting 18lbs of boost.

I know there were a few more things but i just cant think of the right now, possibly blocking them out, this thing was like peeling an onion.

Once i finally got it running i had a hard time finding someone to try and tune it. No one around here has a AWD Dyno that can fit the ESV with a 120 inch wheelbase. Blew a full race built 4l60e in 4K miles and installed a 4L80e and tried 2wd, finally got it on a dyno 840 ftlbs of torque. No traction so i am in the process of converting it back to AWD.

Heres a couple of pics.

Originally Posted by TrickPerformanceProducts

Did you move the altenator because the tbody or the blower?
Very nice install. We did a 3.4 hope to have it running soon.

Originally Posted by NightmareTBSS

So if your install was on an 03, that was an LQ9 and you swapped to L92 heads before the build?

Originally Posted by moregrip

absolutely love that! Awesome job brother, thanks for sharing. If you think of the other details please post them up.....that's the kind of info that makes this place so freakin sweet!